Methods of working in coal and metal mines
Woodruff, Seth D
Methods of working in coal and metal mines Seth D. Woodruff - Oxford : Pergamon, 1966. - 1 v (538 p.) ; 25 cm.
V.1. Theory and application of rock mechanism to roof control and support problems - V.2. Ground support methods - V.3. Planning and operations
Coal mines and mining
Metal mines and mining
622.335 WOO
Methods of working in coal and metal mines Seth D. Woodruff - Oxford : Pergamon, 1966. - 1 v (538 p.) ; 25 cm.
V.1. Theory and application of rock mechanism to roof control and support problems - V.2. Ground support methods - V.3. Planning and operations
Coal mines and mining
Metal mines and mining
622.335 WOO